Adjusting simultaneous escapement with jack position

Once your let-off and drop are set to specifications (approx. 1.5 - 2.5mm for both let-off and drop) you can set simultaneous escapement with the jack position screw. This short video shows how adjusting the position of the jack will change how the jack moves in the repetition lever window.
For simultaneous escapement, you want to see a continuous movement of the jack towards the centerpin of the hammer flange. If the jack moves forward first, the jack is too far back. If the jack appears to move up first (due to the drop screw hitting the rep. lever before the jack touches the let-off button) than the jack is too far forward.
The video demonstrates the jack being back too far and then adjusted closer to correct and then too far the other way, and then finally back to a good position.

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VIDEO VERY GOOD!!